JPH02144383A - Sheet accumulating and delivering device - Google Patents

Abstract

PURPOSE:To perform reliable detection of the presence of sheets in a containing box without being influenced by a state, e.g., sheet powder, dust, and bending of sheets, by a method wherein first and second optical sensors to detect the presence of sheets accumulated on a press plate are mounted in a state that the respective optical axes are positioned in an oblique state. CONSTITUTION:During the starting of an accumulation motion, a press plate 2 is raised to the given position of the upper surface of sheets to ensure a space necessary to the accumulation motion of sheets 3. With this state, the one end part of a guide plate 14 is pressed by means of the upper surface of the press plate 2, and the guide plate 14 is rotated clockwisely. The position of the other end of the guide plate 14 is detected by means of an emission element 16 and a collection element 17 of an optical sensor. Uptake rollers 11 and 12 of a sheet accumulating means are rotated in the direction of arrow marks (a) and (b), the sheets 3 are introduced one by one from a preceding process toward the direction of an arrow mark (c), and the sheets 3 are laminated and accumulated on the press plate 2 through the guide plate 14. The position of the upper surface of the sheets 3 is detected through the guide plate 14 by means of the collection element 16 and the emission element 17.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a paper sheet stacking/feeding device, and particularly to a paper sheet stacking/feeding device in which paper sheets are loaded into a storage box in a normal state.

Either they are piled up or they are folded in half.

The present invention relates to a paper sheet stacking/feeding device suitable for reliably detecting the presence or absence of paper sheets in a storage box, regardless of whether they are piled up or not.

[Prior Art] This type of conventional technology includes devices as described in Japanese Utility Model Application Publication No. 63-76736 and Japanese Utility Model Application Publication No. 63-76744. That is, (1) In the devices described in each of the above-mentioned publications, a pair of optical sensors are provided in the storage box so that the optical axis penetrates in the stacking direction of the paper sheets, and this optical sensor detects the amount of paper sheets in the storage box. I am trying to detect the presence or absence.

(2) In the device described in the above-mentioned Japanese Utility Model Publication No. 63-76736, a contact plate is provided on the push plate that holds the paper sheets in the storage box and at a position opposite to the push plate, and the contact plate is turned on and off.
The off signal is used to detect the presence or absence of paper sheets.

(3) In the device described in the above-mentioned Japanese Utility Model Publication No. 63-76744, the pushing plate is provided with a concave and convex portion, and a gate lever that fits into the concave and convex portion is provided above the pushing plate, and this gate lever is connected to the Falling onto an uneven surface.

The presence or absence of paper sheets on the push plate is detected by detecting the rotation during fitting.

[Problems to be Solved by the Invention] The above-mentioned conventional technology is often employed in automatic teller machines of financial institutions such as banks.

However, the above-mentioned conventional technology has the following problems in reducing processing time and ensuring reliability of paper sheet handling devices including automatic teller machines.

That is, (a) In the prior art (1) above, the optical sensor for detecting the presence or absence of paper sheets in the storage box is installed so that its optical axis goes from the top of the storage box to the bottom. When increasing the capacity of paper sheets to be stored, the distance between the light-emitting element and the light-receiving element of the optical sensor becomes longer, and one of the light-emitting element and the light-receiving element (also in the case of a reflector) is placed below the storage box. be)
Since paper powder, dust, etc. generated or carried during the stacking and feeding operations of paper sheets are likely to accumulate on the element provided below the storage box, the presence or absence of paper sheets can be stably determined. Detection requires a high-output optical sensor, which is generally expensive.

(b) In the prior art described in (2) and (3) above, do the stored paper sheets come into contact with the contact plate or the gate lever?

Since the presence or absence of a paper sheet is detected by checking whether there is a paper sheet or not, it is possible to detect a paper sheet only when one sheet or the push plate is in a fixed position.

On the other hand, in this type of paper sheet stacking/feeding device, the stacking operation position and the paper sheet feeding operation position are generally different, and each operation is performed by moving the push plate to change the position of the paper sheets in the storage box. I am trying to switch between.

Therefore, when the standby state of the device is at least one of the stacking operation state and the feeding operation state, in order to detect the presence or absence of paper sheets, the push plate is operated to locate the paper sheets in the storage box. It is necessary to move the object until it reaches a detectable position, which increases processing time.

(c) In the paper sheet stacking/feeding device, in order to not cause any hindrance to each operation, regardless of the state in which the paper sheets are loaded and stacked in the storage box,
It is necessary to be able to detect the presence or absence of paper sheets in the storage box. In particular, in automatic teller machines, bills may be inserted and stacked in a state of being folded in two, and even in this case, it is necessary to reliably detect the presence or absence of bills in the storage box.

An object of the present invention is to solve the above-mentioned problems by making it possible to reliably detect the presence or absence of paper sheets in a storage box without being affected by paper powder, dust, folds, etc. of paper sheets. The purpose of the present invention is to provide a type of deposition/feeding device.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a first method that detects the presence or absence of paper sheets deposited on a push plate, each of which has a light emitting element and a light receiving element. a second optical sensor; A second optical sensor is provided with each optical axis obliquely oriented, and the first... The second optical sensor is arranged so that its optical axis and the cross section in the stacking direction of paper sheets at the paper sheet presence/absence detection position in the storage box intersect at two points, respectively. The two points where the optical axis of the second optical sensor intersects with the cross section in the stacking direction of the paper sheets are in directions opposite to each other with respect to the longitudinal and transverse center lines of the storage box when viewed from the plane. and the distance between the two points in the longitudinal direction and the transverse direction is 1/2 or less of the length in the longitudinal direction and the transverse direction of the paper sheet, respectively.

Furthermore, in order to quickly achieve the above object, the present invention provides the first object.
A second optical sensor is provided with each optical axis obliquely oriented, and the first... The second optical sensor is arranged so that its optical axis and the cross section in the stacking direction of paper sheets at the paper sheet presence/absence detection position in the storage box intersect at two points, respectively. The two points where the optical axis of the second optical sensor intersects with the cross section in the stacking direction of the paper sheets are in directions opposite to each other with respect to the longitudinal and transverse center lines of the storage box when viewed from the plane. and arranged so that the distance between the two points in the longitudinal direction and the transverse direction is one-half or less of the length in the longitudinal direction and the transverse direction of the paper sheet, respectively, and the first point. The optical axes of the second optical sensors are arranged to cross each other.

Furthermore, in order to achieve the above object, the present invention provides the first aspect of the present invention.
．． A second optical sensor is provided with each optical axis obliquely oriented, and the first... The second optical sensor is arranged so that its optical axis and the cross section in the stacking direction of paper sheets at the paper sheet presence/absence detection position in the storage box intersect at two points, respectively. The two points where the optical axis of the second optical sensor intersects with the cross section in the stacking direction of the paper sheets are in directions opposite to each other with respect to the longitudinal and transverse center lines of the storage box when viewed from the plane. and arranged so that the distance between the two points in the longitudinal direction and the transverse direction is one-half or less of the length in the longitudinal direction and the transverse direction of the paper sheet, respectively, and the first point. The optical axes of the second optical sensors are arranged in a twisted positional relationship with each other.

[Function] (i) In the present invention, the optical axes of the first and second optical sensors for detecting the presence or absence of a paper sheet are arranged with their optical axes obliquely, so that the optical axes of the first and second optical sensors are arranged obliquely. One of the light-emitting element and the light-receiving element of the second optical sensor is not placed below the storage box. This prevents paper powder and dust from accumulating on the element, and prevents paper sheets from being deposited. The first point also applies when increasing storage capacity. The optical axis distance of the second optical sensor does not become long.

(ii) Moreover, in the present invention, the first. The optical axis of the second optical sensor and the cross section in the stacking direction of paper sheets at the paper sheet presence/absence detection position are made to intersect at two points, respectively. The two points where the optical axis of the second optical sensor intersects with the cross section in the stacking direction of the paper sheets are in directions opposite to each other with respect to the longitudinal and transverse center lines of the storage box when viewed from the plane. and the distance between the two points in the longitudinal direction and the width direction is set to be less than half the length of the paper sheet in the longitudinal direction and the width direction, respectively. Regardless of whether the paper sheets are input and stacked in a normal state or folded in two and stacked, the paper sheets will meet at least the above-mentioned first condition. Since one of the optical axes of the second optical sensor is blocked, it is possible to reliably detect the presence or absence of paper sheets in the storage box.

(iii) Furthermore, in the present invention, the paper sheet presence/absence detection position in the storage box is detected at two different positions, that is, the paper sheet stacking operation position and the paper sheet feeding operation position in the paper sheet stacking/feeding device. Similarly, it is possible to detect the presence or absence of paper sheets.

〔Example] Embodiments of the present invention will be described below with reference to the drawings.

Figures 1 to 4 (a) and (b) show a first embodiment of the present invention, in which Figure 1 is a side view showing the stacking operation of paper sheets, and Figure 2 is a side view showing the state of paper sheet stacking operation. A side view showing the operating state, FIG. A perspective view showing the arrangement of the second optical sensor, FIG.
), (b) is the first. FIG. 7 is a plan view showing the relationship between the passing position of the optical axis of the second optical sensor and the position when a paper sheet folded in two is placed in the storage box.

The paper sheet stacking/feeding device of the first embodiment shown in these figures includes a storage box 1 for one paper sheet 3, a paper sheet stacking means, a paper sheet feeding means, and a paper sheet in the storage box 1. The first step is to detect the presence or absence of leaves 3. The second optical sensor and the control unit for the entire device (
(not shown).

Inside the storage box 1, a pushing plate 2 for paper sheets 3 is provided. This push plate 2 can be moved in the vertical direction by a lifting drive source (not shown). and,
Paper sheets 3 are stacked on the pushing plate 2 in a stacked manner, and the pushing plate 2 is adapted to hold the sheets.

The paper sheet stacking means includes a pair of take-in rollers 11 and 12 disposed on one side above the storage box 1, and a pair of take-in rollers 11 and 12 rotatably attached to the rotation shaft 13 of the take-in roller 11. The guide plate 14 has a stopper pin 15 that regulates the lower limit position of the guide plate 14, and a pair of optical sensors. The intake roller 11 is driven by a rotational drive source (
(not shown), the take-up rollers 11, 12 rotate in the directions of arrows a and b shown in FIG. 1, and feed the paper sheet 3' in the direction of arrow C. The guide plate 14 is connected to the rotation shaft 1 of the take-in roller 11.
3, it is rotatably supported using this as a fulcrum. A part of this guide plate 14 faces inside the storage box 1,
The paper sheets 3' are guided into the storage box 1, and the pushing plate 2
It is designed to be deposited on top. One end of the guide plate 14 is in contact with the upper surface of the stacked paper sheets 3.

The optical sensor has a light emitting element 16 and a light receiving element 17, and detects the position of the other end of the guide plate 14 to detect paper sheets accumulated on the push plate 2 in the storage box 1. 3 is at a predetermined position (hereinafter, this position will be referred to as a "sheet stacking operation position") or not, and the detection result is output to the control section. In addition, 1
8 indicates the optical axis of the optical sensor.

The sheet feeding means includes a take-out roller 21 disposed approximately in the middle above the storage box 1, and a set of a feed roller 22 and a gate roller 23 disposed on the other side above the storage box 1; L-shaped bracket 24 supporting the take-out roller 21 and feed roller 22
A tension spring 26 is hooked to the other end of the bracket 24, and a stopper pin 27 regulates the lower limit position of the end of the bracket 24 on the take-out roller 21 side.
and a pair of optical sensors. Each of the take-out roller 21 and the feed roller 22 is provided with a part for feeding out the paper sheet 3 on a part of its circumferential surface,
This feeding section contacts the paper sheet 3 and feeds it out. Further, the take-out roller 21 and the feed roller 22 are connected to a rotational drive source (not shown),
It rotates synchronously in the directions of arrows c and d shown in FIG. 2, so that paper sheets 3 can be fed out in the direction of the arrows. The bracket 24 is rotatably supported around a rotating shaft 25 of the feed roller 22 as a fulcrum. The tension spring 26 moves the upper surface of the paper sheets 3 stacked on the push plate 2 in the storage box 1 to a predetermined position (hereinafter, this position is referred to as the "paper sheet feeding operation position"). , ), the take-out roller 21 is biased in a direction to come into contact with the upper surface of the paper sheet 3 via the bracket 24 with an appropriate pressing force. The optical sensor includes:
It has a light emitting element 28 and a light receiving element 29.

By detecting the position of the other end of the bracket 24, it is detected whether or not the take-out roller 21 is at the sheet feeding operation position, and the detection result is output to the control section. , 30 indicate the optical axis of the optical sensor.

first and second detecting the presence or absence of paper sheets 3 in the storage box 1;
Of the optical sensors, the first optical sensor is the light emitting element 3
1 and a light receiving element 33, and the second optical sensor has a light emitting element 32 and a light receiving element 34. Said 1st. The light emitting element 31.32 and the light receiving element 33.34 of the second optical sensor are arranged obliquely, that is, so that neither the light emitting element 31.32 nor the light receiving element 33. 1. The optical axes 35° 36 of the first optical sensor are arranged in a twisted relationship with respect to each other. Also.

As shown in FIG. 3, the light emitting element 31 and the light receiving element 33 of the first optical sensor have an optical axis 35 at a cross section 6 in the stacking direction of the paper sheets 3 in the storage box 1, which is the paper sheet presence/absence detection position. Two points A, the stacking operation position and the feeding operation position of paper sheets,
The light emitting element 32 and the light receiving element 34 of the second optical sensor are arranged so as to pass through the point A', and the optical axis 36 is located inside the storage box 1, which is the position for detecting the presence or absence of one paper sheet, as shown in FIG. It is arranged so as to pass through two intersections B and B' of the stacking operation position and the feeding operation position of the paper sheets in the cross section 7 in the stacking direction of the paper sheets 3. Furthermore, the first. The light emitting element 31.32 and the light receiving element 33.34 of the second optical sensor are located at the intersections A and B of the optical axes 35 and 36 and the sheet stacking operation position.
, and the intersections A' and B' of the optical axis 35, 36 and the sheet feeding operation position are shown in Fig. 4(a) and (
As shown in b), the storage box 1 is disposed so as to be opposed to the center line 4 in the longitudinal direction and the center line 5 in the transverse direction of the storage box 1 when viewed from above. Moreover, the light emitting elements 31 and 32 and the light receiving elements 33 and 34 of the first and second optical sensors are
Intersection points A and B between the optical axis 35 and 36 and the paper sheet stacking operation position
, and the distances L in the long and short directions of the intersections A' and B' of the optical axis 35, 36 and the sheet feeding operation position.
As shown in FIGS. 4(a) and 4(b), in this embodiment, approximately 1/2 or less of the length of the paper sheet 3 in the long and short directions is set so that It is placed in one quarter.

The sheet stacking and feeding device of the first embodiment operates as follows.

First, when starting the stacking operation of paper sheets, the push plate 2 provided in the storage box 1 is once raised to the paper sheet stacking operation position by a lifting drive source (not shown), and the stacking operation of the paper sheets 3 is started. Secure the necessary space. In this state, one end of the guide plate 14 is pushed by the upper surface of the push plate 2, and the guide plate 1
4 rotates clockwise in FIG. Then, the position of the other end of the guide plate 14 is detected by the light emitting element 16 and the light receiving element 17 of the optical sensor, thereby detecting that the upper surface of the push plate 2 is at the sheet stacking operation position.

Next, the take-in rollers 11 and 12 of the sheet stacking means are rotated in the directions of arrows a and b shown in FIG. 1, and the sheets 3' are taken one by one from the previous process in the direction of arrow C shown in FIG. The paper sheets 3 are stacked and stacked on the push plate 2 via the guide plate 14.

When the paper sheets 3 are deposited on the push plate 2, the position of the upper surface of the paper sheets 3 is detected by the light emitting element 16 and light receiving element 17 of the optical sensor through the guide plate 14, and the push plate 2 is gradually lowered. The position of the upper surface of the paper sheet 3 is controlled so as to always match the paper sheet stacking operation position.

The above operations are repeated, and as shown in FIG. 1, paper sheets 3 are stacked one after another on the push plate 2 and stored in the storage box 1.

Next, when starting to feed out the paper sheets, as shown in FIG. Raise 2.

In this state, the take-out roller 2 of the sheet feeding means
1 is brought into contact with the upper surface of the paper sheet 3 via the bracket 24 by the action of the tension spring 26 with an appropriate pressing force. In addition, by detecting the position of the other end of the bracket 24 using the light emitting element 28 and the light receiving element 29 of the optical sensor,
It is detected that the take-out roller 21 is in contact with the upper surface of the paper sheet 3 at the paper sheet feeding operation position.

Then, the take-out roller 21 and the feed roller 22
are rotated synchronously in the directions of arrows c and d shown in FIG.

As a result, the paper sheets 3 are removed one by one by the take-out roller 21.
The sheet 3 is taken out and fed between the feed roller 22 and the gate roller 23, and the feed roller 22 and the gate roller 23 feed out the sheet 3 in the direction of the arrow shown in FIG.

When the paper sheet 3 in the paper sheet feeding operation position is fed out, the bracket 24 rotates clockwise in FIG. Light emitting element 28 and light receiving element 2 of the sensor
9, and based on this detection result, the push plate 2 in the storage box 1 is raised, and the upper surface of the paper sheets 3 deposited on this push plate 2 is controlled so that it is always at the paper sheet feeding operation position. By repeating six or more operations, the two sheets 3 can be fed one after another.

By the way, the paper sheets 3 are taken into the storage box 1, and the push plate 2
When storing paper sheets 3 that are stacked on top, if the paper sheets 3 are, for example, banknotes, they are folded into two in the longitudinal direction as shown in FIG. 4(a). , and may be stored at an angle with respect to the storage box 1, as shown by the solid line in FIG. 4(a), or at a biased position, as shown by the broken line. Furthermore, paper sheets 3 are shown in Figure 4 (b
) as shown in FIG. 4(b), and are placed in a state of being folded in two in the transverse direction, and stored in the storage box 1 at an angle as shown by the solid line in FIG. It may be stored in a certain position.

Therefore, in this first embodiment, the first detection position for detecting the presence or absence of paper sheets 3 is placed at the paper sheet presence/absence detection position in the storage box 1. A second optical sensor is provided, and as shown in FIG. 3, the optical axis 35 of the first optical sensor is located at two points A at the stacking operation position and the feeding position of the paper sheets in the cross section in the stacking direction of the paper sheets. ,
Similarly, the optical axis 36 of the second optical sensor intersects at two points B and B' at the stacking operation position and the feeding position of the paper sheets in the cross section in the stacking direction of the paper sheets. As shown in FIGS. 3 and 4(a) and (b), the points A and A' and the points B and B' are aligned with the center line 4 in the longitudinal direction of the storage box 1 and the center in the lateral direction. Located at a position opposite to each of the lines 5, and distance AB between the two points
' and A'B are 1/4 of the length of paper sheet 3 in the longitudinal direction
Since the distances AA' and BB' are set to 1/4 of the length of the paper sheet 3 in the transverse direction, the paper sheet 3 is No matter which direction the paper sheet 3 is folded in two and thrown into the storage box 1 and stored, the paper sheet 3 will be the first one. There is a position that interrupts at least one of the optical axes 35, 36 of the second optical sensor.

Therefore, in this first embodiment, regardless of whether the paper sheets 3 are inserted and stored in the storage box 1 in a normal state or folded in two and stored, , it becomes possible to reliably detect the presence or absence of paper sheets 3 on the push plate 2 in the storage box 1.

In addition, in this first embodiment, as shown in FIGS. 1 to 3, the first embodiment detects the presence or absence of paper sheets 3. Since the second optical sensor is provided obliquely and neither the light emitting element 31° 32 nor the light receiving element 33, 34 is located below the storage box 1, the light emitting element 31° 32 and the light receiving element 33
．． 34 can be prevented from deteriorating in performance due to being covered with paper powder or dust.

Next, FIG. 5 shows a second embodiment of the present invention, in which the first embodiment detects accumulated paper sheets and their presence or absence. FIG. 7 is a perspective view showing the arrangement of second optical sensors.

In this second embodiment, the first
．． Light emitting element 31, 32 and light receiving element 3 of the second optical sensor
3.34 are arranged in a twisted positional relationship with optical axes 35, 36 in a direction different from that of the first embodiment.

Furthermore, FIG. 6 shows a third embodiment.

FIG. 3 is a perspective view showing the arrangement relationship between the stacked paper sheets and the first and second optical sensors that detect the presence or absence of the sheets.

In this third embodiment, the first
．． Light emitting element 31, 32 and light receiving element 3 of the second optical sensor
3.34 are arranged so that the optical axes 35, 36 intersect between the paper sheet stacking operation position and the paper sheet feeding operation position.

These second. Other configurations in the third embodiment.

The operation is similar to that of the first embodiment.

[Effects of the Invention] According to the invention described in claim 1 of the present invention described above, the first. The second optical sensors are provided with their respective optical axes being obliquely oriented, and the first and second optical sensors are provided with their optical axes oriented obliquely. Since one of the light-emitting element and the light-receiving element of the second optical sensor is not placed below the storage box, paper powder and dust do not accumulate on the element, and the paper sheet storage capacity is Even when increasing . The optical axis distance of the second optical sensor does not become long, and therefore the optical axis distance of the second optical sensor does not become long. There is no need to use an expensive second optical sensor, which has the effect of reducing equipment costs.

Further, according to the invention according to claim 1 of the present invention, the first
．． The second optical sensor is configured such that its optical axis and the cross section in the stacking direction of paper sheets at the paper sheet presence/absence detection position in the storage box intersect at two points, respectively. The two points where the optical axis of the second optical sensor intersects with the cross section in the stacking direction of the paper sheets are in directions opposite to each other with respect to the longitudinal and transverse center lines of the storage box when viewed from the plane. In addition, the distance between the two points in the longitudinal direction and the transverse direction is less than half the length of the paper sheet in the longitudinal direction and the transverse direction, respectively. , regardless of whether the paper sheets are inserted into the storage box in a normal state and piled up or folded in two and piled up, the paper sheets are at least
．． Since one of the optical axes of the second optical sensor is blocked, it is possible to reliably detect the presence or absence of paper sheets in the storage box.

Further, in the invention according to claim 2 of the present invention, the invention according to claim 1
In the invention described, 1. In the invention according to claim 3 of the present invention, in the invention according to claim 1, the optical axes of the second optical sensors are arranged to cross each other. The optical axes of the second optical sensors are arranged in a twisted positional relationship with each other, and the inventions according to claims 2 and 3 also produce the same effects as the invention according to claim 1.

[Brief explanation of the drawing]

Figures 1 to 4 (a) and (b) show a first embodiment of the present invention, in which Figure 1 is a side view showing the stacking operation state of paper sheets, and Figure 2 is a side view showing the state of paper sheet stacking operation. A side view showing the operating state, FIG. A perspective view showing the arrangement of the second optical sensor, FIG.
a) and (b) are the first. FIGS. 5 and 6 are plan views showing the relationship between the passing position of the optical axis of the second optical sensor and the position when paper sheets folded in half are placed in the storage box. The second and third embodiments of the present invention are shown in the first and third embodiments of the present invention. FIG. 3 is a perspective view showing the positional relationship with a second optical sensor. 1... Storage box, 2... Push board, 3... Paper leaves, 4
... Center line in the longitudinal direction of the storage box, 5 ... Center line in the short direction as well, 6, 7 ... Cross section of paper sheet presence/absence detection position, 11° 12 ... Paper sheet stacking means intake roller,
14... The same guide plate, 16. 17... The light emitting element and the light receiving element of the same optical sensor, 21... The take-out roller of the paper sheet feeding means, 22... The same feed roller, 23
. . . gate roller, 24. Bracket for take-out roller and feed roller, 26. Bracket tension spring, 28. 29.. Light emitting element and light receiving element of optical sensor of sheet feeding means, 31 , 32 . . . detecting the presence or absence of paper sheets. Light emitting element of the second optical sensor, 33. 34... Same light receiving element, 35° 36... Same optical axis, A, A'... Optical axis of the first optical sensor and paper leaf presence detection Intersection with the position, B, B'... Intersection between the optical axis of the second optical sensor and the paper sheet presence/absence detection position. Agent: Tadashi Akimoto, Patent Attorney Actual figure 1-1-, Fushino-sai 2-11 Culm screw 3--One sacrifice + +, +2---One regret y! Miloaf 14---
Force ID not available (+6-----ffi party headquarters 17-----receipt) Old-Yuzu 21--Itori・Furashi loaf 22---Feed loaf 23-1-Date loaf 24-1- Racket 26-51.5191rne 28-, light glaze number 29- receiving claw te 30- Figures (a) (b) 4--The middle of the 4-way M1 boat (Ring 5--@Asahiga)

Claims (1)

[Scope of Claims] 1. A storage box in which paper sheets are stacked and stored in a stacked manner on a push plate, and paper sheets that are guided into the storage box, stacked on the push plate, and held. A paper sheet stacking/feeding device comprising a leaf stacking means and a paper sheet feeding means for feeding paper sheets held on a push plate in the storage box, each of which has a light emitting element and a light receiving element. Further, first and second optical sensors are provided for detecting the presence or absence of paper sheets deposited on the push plate, and the first and second optical sensors are provided with their optical axes oriented obliquely, respectively. In addition, the first and second optical sensors are configured such that their optical axes intersect at two points with a cross section in the stacking direction of the paper sheets at the paper sheet presence/absence detection position in the storage box, and The two points where the optical axis of the second optical sensor intersects with the cross section in the stacking direction of the paper sheets are in directions opposite to each other with respect to the longitudinal and transverse center lines of the storage box when viewed from the plane. and arranged such that the distance between the two points in the longitudinal direction and the transverse direction is one-half or less of the length of the paper sheet in the longitudinal direction and the transverse direction, respectively. Leaf accumulation/feeding device. 2. The first and second optical sensors are provided with their respective optical axes facing obliquely, and the first and second optical sensors are arranged between the optical axis and the position for detecting the presence or absence of paper sheets in the storage box. The cross sections of the paper sheets in the stacking direction intersect at two points, and the two points where the optical axes of the first and second optical sensors and the cross sections of the paper sheets in the stacking direction intersect each other when viewed from a plane. and the distance between the two points in the longitudinal and transverse directions of the paper sheet is opposite to the longitudinal and transverse center lines of the storage box. 2. The paper sheet according to claim 1, wherein the first and second optical sensors are arranged such that their lengths are one-half or less, and the optical axes of the first and second optical sensors intersect with each other. Deposition/feeding device. 3. The first and second optical sensors are provided with their respective optical axes facing obliquely, and the first and second optical sensors are arranged so that their optical axes and the position for detecting the presence or absence of paper sheets in the storage box are aligned. The cross sections of the paper sheets in the stacking direction intersect at two points, and the two points where the optical axes of the first and second optical sensors and the cross sections of the paper sheets in the stacking direction intersect each other when viewed from a plane. and the distance between the two points in the longitudinal and transverse directions of the paper sheet is opposite to the longitudinal and transverse center lines of the storage box. Claim 1, wherein the optical axes of the first and second optical sensors are arranged in a twisted positional relationship with respect to each other.
The paper sheet stacking/feeding device described.